For each reaction, wheter the sign of `Delta S` (entropy) is positive or negative ?
(a) `Ni(s)+4CO(g)rarr Ni(CO)_(4)(g)` (b) `4Fe(s)+3O_(2)(g)rarr 2Fe_(2)O(s)`
(c )`H_(2)(g)+S(s)rarr H_(2)S(g)` (d) `2NO(g)+O_(2)(g)rarr 2NO_(2)(g)`

For which one of the following reaction,the graph of Delta G against T is almost horizontal to temperature axis (А) C_((s)) + O_(2(g)) rarr CO_(2(g)) (В) 2C_((s)) + O_(2(g)) rarr 2CO_((g)) (с) 2CO_((s)) + O_(2(g)) rarr 2 CO_(2(g)) (D) 2Mg_((s)) + O_(2(g)) rarr 2 MgO_((s))

For the system S (s) + O_(2)(g) rarr SO_(2)(g) ?

For the system S (s) + O_(2)(g) rarr SO_(2)(g) ?

In the following process/es Delta H lt Delta U (A) C(s) + O_(2)(g) rarr CO_(2)(g) (B) CO(g)+(1)/(2)O_(2)(g) rarr CO_(2)(g) (C) N_(2)(g)+3H_(2)(g) rarr 2NH_(3)(g) (D) CaCO_(3)(s) rarr CaO(s) + CO_(2)(g)

For the reaction : C(s) + O_(2)(g) rarr CO_(2)(g)

Predict the sign of DeltaS for each of the following process: a. O_(2)(g) rarr 2O(g) b. N_(2)(g) +3H_(2)(g) rarr 2NH_(3)(g) c. C(s) +H_(2)O(l) rarr CO(g) +H_(2)(g) d. Br_(2)(l) rarr Br_(2)(g) e. N_(2)(g, 10 atm) rarr N_(2)(g,1atm) f. Desalination of water. g. Devitrification of glass h. Hard boiling og an egg i. C(s, "graphite") rarr C(s, "diamond")

Predict the sign of DeltaS for each of the following process: a. O_(2)(g) rarr 2O(g) b. N_(2)(g) +3H_(2)(g) rarr 2NH_(3)(g) c. C(s) +H_(2)O(l) rarr CO(g) +H_(2)(g) d. Br_(2)(l) rarr Br_(2)(g) e. N_(2)(g, 10 atm) rarr N_(2)(g,1atm) f. Desalination of water. g. Devitrification of glass h. Hard boiling of an egg i. C(s, "graphite") rarr C(s, "diamond")

C_((s))+O_(2(g))rarr CO_(2(g))+Q is ………………….